Perhaps you should try some spelling variations:
"trinh dung luan van kiem soat" » "trinh dung luan van kiem toan", "trinh dung luan va kiem soat", "trinh dung luan van kien soat", "trinh dung luan van hien soat", "trinh dung quan van kiem soat", "trinh dung lan van kiem soat"
"tinh dong nam van hieu hoa" » "tinh dung nam van hieu hoa", "hinh dong nam van hieu hoa", "kinh dong nam van hieu hoa", "tinh dong ha van hieu hoa", "tinh dong tai van hieu hoa", "tinh dong va van hieu hoa", "tinh dong nam cao hieu hoa", "tinh dong nam van tieu hoa", "tinh dong nam van dieu hoa", "tinh dong nam van hiep hoa", "tinh dong nam dan hieu hoa", "tinh dong nam va hieu hoa", "tinh dong pham van hieu hoa"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("trinh dung luan van kiem soat") or ("tinh dong nam van hieu hoa"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("trinh dung luan van kiem soat") OR ("tinh dong nam van hieu hoa"))*.
• Removing quotes may allow a broader search: (( trinh dung luan van kiem soat ) or ( tinh dong nam van hieu hoa ))*.